diff --git a/src/Composer/Command/CreateProjectCommand.php b/src/Composer/Command/CreateProjectCommand.php
index 1208a404e..9a06174e6 100644
--- a/src/Composer/Command/CreateProjectCommand.php
+++ b/src/Composer/Command/CreateProjectCommand.php
@@ -199,7 +199,7 @@ EOT
         if (!$keepVcs && $installedFromVcs
             && (
                 !$io->isInteractive()
-                || $io->askConfirmation('<info>Do you want to remove the exisitng VCS (.git, .svn..) history?</info> [<comment>Y,n</comment>]? ', true)
+                || $io->askConfirmation('<info>Do you want to remove the existing VCS (.git, .svn..) history?</info> [<comment>Y,n</comment>]? ', true)
             )
         ) {
             $finder = new Finder();
@@ -216,7 +216,7 @@ EOT
                     }
                 }
             } catch (\Exception $e) {
-                $io->write('<error>An error occured while removing the VCS metadata: '.$e->getMessage().'</error>');
+                $io->write('<error>An error occurred while removing the VCS metadata: '.$e->getMessage().'</error>');
             }
         }
 
diff --git a/src/Composer/Command/ShowCommand.php b/src/Composer/Command/ShowCommand.php
index 174e5e0ad..49905aa7a 100644
--- a/src/Composer/Command/ShowCommand.php
+++ b/src/Composer/Command/ShowCommand.php
@@ -146,6 +146,10 @@ EOT
     /**
      * finds a package by name and version if provided
      *
+     * @param RepositoryInterface $installedRepo
+     * @param RepositoryInterface $repos
+     * @param string              $name
+     * @param string              $version
      * @return array                     array(CompletePackageInterface, array of versions)
      * @throws \InvalidArgumentException
      */
@@ -267,7 +271,11 @@ EOT
     /**
      * print link objects
      *
-     * @param string $linkType
+     * @param InputInterface           $input
+     * @param OutputInterface          $output
+     * @param CompletePackageInterface $package
+     * @param string                   $linkType
+     * @param string                   $title
      */
     protected function printLinks(InputInterface $input, OutputInterface $output, CompletePackageInterface $package, $linkType, $title = null)
     {
diff --git a/src/Composer/DependencyResolver/Problem.php b/src/Composer/DependencyResolver/Problem.php
index ec68b28db..51af36e80 100644
--- a/src/Composer/DependencyResolver/Problem.php
+++ b/src/Composer/DependencyResolver/Problem.php
@@ -85,7 +85,7 @@ class Problem
                 if (0 === stripos($job['packageName'], 'lib-')) {
                     $lib = substr($job['packageName'], 4);
 
-                    return "\n    - The requested linked library ".$job['packageName'].$this->constraintToText($job['constraint']).' has the wrong version instaled or is missing from your system, make sure to have the extension providing it.';
+                    return "\n    - The requested linked library ".$job['packageName'].$this->constraintToText($job['constraint']).' has the wrong version installed or is missing from your system, make sure to have the extension providing it.';
                 }
 
                 return "\n    - The requested package ".$job['packageName'].$this->constraintToText($job['constraint']).' could not be found.';
diff --git a/src/Composer/DependencyResolver/Rule.php b/src/Composer/DependencyResolver/Rule.php
index f1b9b408c..d249f6d37 100644
--- a/src/Composer/DependencyResolver/Rule.php
+++ b/src/Composer/DependencyResolver/Rule.php
@@ -203,7 +203,7 @@ class Rule
                         // handle linked libs
                         $lib = substr($targetName, 4);
 
-                        $text .= ' -> the requested linked library '.$lib.' has the wrong version instaled or is missing from your system, make sure to have the extension providing it.';
+                        $text .= ' -> the requested linked library '.$lib.' has the wrong version installed or is missing from your system, make sure to have the extension providing it.';
                     } else {
                         $text .= ' -> no matching package found.';
                     }
diff --git a/src/Composer/DependencyResolver/RuleSetGenerator.php b/src/Composer/DependencyResolver/RuleSetGenerator.php
index 343653ac3..b40ce1a60 100644
--- a/src/Composer/DependencyResolver/RuleSetGenerator.php
+++ b/src/Composer/DependencyResolver/RuleSetGenerator.php
@@ -106,7 +106,7 @@ class RuleSetGenerator
      * and B the provider.
      *
      * @param PackageInterface $issuer   The package declaring the conflict
-     * @param Package          $provider The package causing the conflict
+     * @param PackageInterface $provider The package causing the conflict
      * @param int              $reason   A RULE_* constant describing the
      *                                     reason for generating this rule
      * @param mixed $reasonData Any data, e.g. the package name, that
@@ -226,7 +226,6 @@ class RuleSetGenerator
      *
      * @param PackageInterface $package Rules for this package's updates are to
      *                                   be added
-     * @param bool $allowAll Whether downgrades are allowed
      */
     private function addRulesForUpdatePackages(PackageInterface $package)
     {
diff --git a/src/Composer/DependencyResolver/RuleWatchGraph.php b/src/Composer/DependencyResolver/RuleWatchGraph.php
index 72b288e15..59c2d6ef5 100644
--- a/src/Composer/DependencyResolver/RuleWatchGraph.php
+++ b/src/Composer/DependencyResolver/RuleWatchGraph.php
@@ -34,7 +34,7 @@ class RuleWatchGraph
      *
      * Assertions are skipped because they only depend on a single package and
      * have no alternative literal that could be true, so there is no need to
-     * watch chnages in any literals.
+     * watch changes in any literals.
      *
      * @param RuleWatchNode $node The rule node to be inserted into the graph
      */
@@ -59,7 +59,7 @@ class RuleWatchGraph
      * If a decision, e.g. +A has been made, then all rules containing -A, e.g.
      * (-A|+B|+C) now need to satisfy at least one of the other literals, so
      * that the rule as a whole becomes true, since with +A applied the rule
-     * is now (false|+B|+C) so essentialy (+B|+C).
+     * is now (false|+B|+C) so essentially (+B|+C).
      *
      * This means that all rules watching the literal -A need to be updated to
      * watch 2 other literals which can still be satisfied instead. So literals
diff --git a/src/Composer/DependencyResolver/Solver.php b/src/Composer/DependencyResolver/Solver.php
index 2ad3965fe..5a12b73e5 100644
--- a/src/Composer/DependencyResolver/Solver.php
+++ b/src/Composer/DependencyResolver/Solver.php
@@ -204,6 +204,7 @@ class Solver
      * Evaluates each term affected by the decision (linked through watches)
      * If we find unit rules we make new decisions based on them
      *
+     * @param integer $level
      * @return Rule|null A rule on conflict, otherwise null.
      */
     protected function propagate($level)
@@ -551,7 +552,7 @@ class Solver
     /*-------------------------------------------------------------------
     * enable/disable learnt rules
     *
-    * we have enabled or disabled some of our rules. We now reenable all
+    * we have enabled or disabled some of our rules. We now re-enable all
     * of our learnt rules except the ones that were learnt from rules that
     * are now disabled.
     */
diff --git a/src/Composer/Downloader/DownloadManager.php b/src/Composer/Downloader/DownloadManager.php
index 86cfe3d1c..42f822c00 100644
--- a/src/Composer/Downloader/DownloadManager.php
+++ b/src/Composer/Downloader/DownloadManager.php
@@ -85,7 +85,7 @@ class DownloadManager
      *
      * @return DownloaderInterface
      *
-     * @throws UnexpectedValueException if downloader for provided type is not registeterd
+     * @throws UnexpectedValueException if downloader for provided type is not registered
      */
     public function getDownloader($type)
     {
diff --git a/src/Composer/Downloader/FileDownloader.php b/src/Composer/Downloader/FileDownloader.php
index c5ec96673..b567e5a5c 100644
--- a/src/Composer/Downloader/FileDownloader.php
+++ b/src/Composer/Downloader/FileDownloader.php
@@ -37,7 +37,10 @@ class FileDownloader implements DownloaderInterface
     /**
      * Constructor.
      *
-     * @param IOInterface $io The IO instance
+     * @param IOInterface      $io         The IO instance
+     * @param Config           $config     The config
+     * @param RemoteFilesystem $rfs        The remote filesystem
+     * @param Filesystem       $filesystem The filesystem
      */
     public function __construct(IOInterface $io, Config $config, RemoteFilesystem $rfs = null, Filesystem $filesystem = null)
     {
diff --git a/src/Composer/Downloader/PearPackageExtractor.php b/src/Composer/Downloader/PearPackageExtractor.php
index 16df5e953..4cd7fea02 100644
--- a/src/Composer/Downloader/PearPackageExtractor.php
+++ b/src/Composer/Downloader/PearPackageExtractor.php
@@ -127,8 +127,9 @@ class PearPackageExtractor
     /**
      * Builds list of copy and list of remove actions that would transform extracted PEAR tarball into installed package.
      *
-     * @param $source  string path to extracted files.
-     * @param $role    string package file types to extract.
+     * @param string $source string path to extracted files
+     * @param array  $roles  array [role => roleRoot] relative root for files having that role
+     * @param array  $vars   list of values can be used for replacement tasks
      * @return array array of 'source' => 'target', where source is location of file in the tarball (relative to source
      *  path, and target is destination of file (also relative to $source path)
      * @throws \RuntimeException
diff --git a/src/Composer/Downloader/VcsDownloader.php b/src/Composer/Downloader/VcsDownloader.php
index 87aadca1a..a7f63dc95 100644
--- a/src/Composer/Downloader/VcsDownloader.php
+++ b/src/Composer/Downloader/VcsDownloader.php
@@ -136,7 +136,7 @@ abstract class VcsDownloader implements DownloaderInterface
      * Prompt the user to check if changes should be stashed/removed or the operation aborted
      *
      * @param string $path
-     * @param bool   $stash if true (update) the changes can be stashed and reapplied after an update,
+     * @param bool   $update if true (update) the changes can be stashed and reapplied after an update,
      *                                  if false (remove) the changes should be assumed to be lost if the operation is not aborted
      * @throws \RuntimeException in case the operation must be aborted
      */
diff --git a/src/Composer/Factory.php b/src/Composer/Factory.php
index c23fa710c..92701c981 100644
--- a/src/Composer/Factory.php
+++ b/src/Composer/Factory.php
@@ -225,7 +225,8 @@ class Factory
     }
 
     /**
-     * @param  IO\IOInterface             $io
+     * @param IO\IOInterface $io
+     * @param Config         $config
      * @return Downloader\DownloadManager
      */
     public function createDownloadManager(IOInterface $io, Config $config)
diff --git a/src/Composer/Installer.php b/src/Composer/Installer.php
index a3898a95e..f1349bcaa 100644
--- a/src/Composer/Installer.php
+++ b/src/Composer/Installer.php
@@ -708,7 +708,7 @@ class Installer
     }
 
     /**
-     * wether to run in drymode or not
+     * Whether to run in drymode or not
      *
      * @param  boolean   $dryRun
      * @return Installer
@@ -747,7 +747,7 @@ class Installer
     }
 
     /**
-     * Wether or not generated autoloader are optimized
+     * Whether or not generated autoloader are optimized
      *
      * @param bool $optimizeAutoloader
      * @return Installer
diff --git a/src/Composer/Installer/InstallationManager.php b/src/Composer/Installer/InstallationManager.php
index 136495c69..82604d283 100644
--- a/src/Composer/Installer/InstallationManager.php
+++ b/src/Composer/Installer/InstallationManager.php
@@ -137,7 +137,7 @@ class InstallationManager
      * Executes update operation.
      *
      * @param RepositoryInterface $repo      repository in which to check
-     * @param InstallOperation    $operation operation instance
+     * @param UpdateOperation     $operation operation instance
      */
     public function update(RepositoryInterface $repo, UpdateOperation $operation)
     {
diff --git a/src/Composer/Installer/InstallerInstaller.php b/src/Composer/Installer/InstallerInstaller.php
index 315334c84..f54b295dc 100644
--- a/src/Composer/Installer/InstallerInstaller.php
+++ b/src/Composer/Installer/InstallerInstaller.php
@@ -29,8 +29,11 @@ class InstallerInstaller extends LibraryInstaller
     private static $classCounter = 0;
 
     /**
+     * Initializes Installer installer.
+     *
      * @param IOInterface $io
      * @param Composer    $composer
+     * @param string      $type
      */
     public function __construct(IOInterface $io, Composer $composer, $type = 'library')
     {
diff --git a/src/Composer/Installer/LibraryInstaller.php b/src/Composer/Installer/LibraryInstaller.php
index bac6bdf31..ba97fb1ef 100644
--- a/src/Composer/Installer/LibraryInstaller.php
+++ b/src/Composer/Installer/LibraryInstaller.php
@@ -40,6 +40,7 @@ class LibraryInstaller implements InstallerInterface
      *
      * @param IOInterface $io
      * @param Composer    $composer
+     * @param string      $type
      */
     public function __construct(IOInterface $io, Composer $composer, $type = 'library')
     {
diff --git a/src/Composer/Package/Link.php b/src/Composer/Package/Link.php
index da6373144..159fa3ae9 100644
--- a/src/Composer/Package/Link.php
+++ b/src/Composer/Package/Link.php
@@ -26,14 +26,16 @@ class Link
     protected $target;
     protected $constraint;
     protected $description;
+    protected $prettyConstraint;
 
     /**
      * Creates a new package link.
      *
      * @param string                  $source
      * @param string                  $target
-     * @param LinkConstraintInterface $constraint  Constraint applying to the target of this link
-     * @param string                  $description Used to create a descriptive string representation
+     * @param LinkConstraintInterface $constraint       Constraint applying to the target of this link
+     * @param string                  $description      Used to create a descriptive string representation
+     * @param string                  $prettyConstraint
      */
     public function __construct($source, $target, LinkConstraintInterface $constraint = null, $description = 'relates to', $prettyConstraint = null)
     {
diff --git a/src/Composer/Package/Locker.php b/src/Composer/Package/Locker.php
index 36530bea2..bd636c8f1 100644
--- a/src/Composer/Package/Locker.php
+++ b/src/Composer/Package/Locker.php
@@ -213,9 +213,11 @@ class Locker
     /**
      * Locks provided data into lockfile.
      *
-     * @param array $packages array of packages
-     * @param mixed $packages array of dev packages or null if installed without --dev
-     * @param array $aliases  array of aliases
+     * @param array  $packages         array of packages
+     * @param mixed  $devPackages      array of dev packages or null if installed without --dev
+     * @param array  $aliases          array of aliases
+     * @param string $minimumStability
+     * @param array  $stabilityFlags
      *
      * @return bool
      */
diff --git a/src/Composer/Package/PackageInterface.php b/src/Composer/Package/PackageInterface.php
index c8b9a7f39..e034acba6 100644
--- a/src/Composer/Package/PackageInterface.php
+++ b/src/Composer/Package/PackageInterface.php
@@ -97,7 +97,7 @@ interface PackageInterface
     /**
      * Returns source from which this package was installed (source/dist).
      *
-     * @param string $type source/dist
+     * @return string source/dist
      */
     public function getInstallationSource();
 
diff --git a/src/Composer/Package/Version/VersionParser.php b/src/Composer/Package/Version/VersionParser.php
index a12cf41f4..e7aae0749 100644
--- a/src/Composer/Package/Version/VersionParser.php
+++ b/src/Composer/Package/Version/VersionParser.php
@@ -150,7 +150,7 @@ class VersionParser
     /**
      * Normalizes a branch name to be able to perform comparisons on it
      *
-     * @param  string $version
+     * @param  string $name
      * @return array
      */
     public function normalizeBranch($name)
diff --git a/src/Composer/Repository/Pear/PackageDependencyParser.php b/src/Composer/Repository/Pear/PackageDependencyParser.php
index aa198ceb4..515993d03 100644
--- a/src/Composer/Repository/Pear/PackageDependencyParser.php
+++ b/src/Composer/Repository/Pear/PackageDependencyParser.php
@@ -250,7 +250,7 @@ class PackageDependencyParser
     /**
      * Parses version constraint
      *
-     * @param  array  $data array containing serveral 'min', 'max', 'has', 'exclude' and other keys.
+     * @param  array  $data array containing several 'min', 'max', 'has', 'exclude' and other keys.
      * @return string
      */
     private function parse20VersionConstraint(array $data)
diff --git a/src/Composer/Repository/Pear/PackageInfo.php b/src/Composer/Repository/Pear/PackageInfo.php
index 5fd5956d3..d579187e5 100644
--- a/src/Composer/Repository/Pear/PackageInfo.php
+++ b/src/Composer/Repository/Pear/PackageInfo.php
@@ -69,7 +69,7 @@ class PackageInfo
     }
 
     /**
-     * @return string the package short escription
+     * @return string the package short description
      */
     public function getShortDescription()
     {
diff --git a/src/Composer/Repository/Pear/ReleaseInfo.php b/src/Composer/Repository/Pear/ReleaseInfo.php
index 4ad984d80..39d6e1ed6 100644
--- a/src/Composer/Repository/Pear/ReleaseInfo.php
+++ b/src/Composer/Repository/Pear/ReleaseInfo.php
@@ -24,7 +24,7 @@ class ReleaseInfo
 
     /**
      * @param string         $stability
-     * @param DependencyInfo $dependencies
+     * @param DependencyInfo $dependencyInfo
      */
     public function __construct($stability, $dependencyInfo)
     {
diff --git a/src/Composer/Repository/PearRepository.php b/src/Composer/Repository/PearRepository.php
index 6d28b081d..4fcd3233b 100644
--- a/src/Composer/Repository/PearRepository.php
+++ b/src/Composer/Repository/PearRepository.php
@@ -83,7 +83,8 @@ class PearRepository extends ArrayRepository
     /**
      * Builds CompletePackages from PEAR package definition data.
      *
-     * @param  ChannelInfo     $channelInfo
+     * @param ChannelInfo   $channelInfo
+     * @param VersionParser $versionParser
      * @return CompletePackage
      */
     private function buildComposerPackages(ChannelInfo $channelInfo, VersionParser $versionParser)
diff --git a/src/Composer/Repository/RepositoryManager.php b/src/Composer/Repository/RepositoryManager.php
index cb4a616d8..ea0dca137 100644
--- a/src/Composer/Repository/RepositoryManager.php
+++ b/src/Composer/Repository/RepositoryManager.php
@@ -89,7 +89,7 @@ class RepositoryManager
      * @param  string                   $type   repository type
      * @param  string                   $config repository configuration
      * @return RepositoryInterface
-     * @throws InvalidArgumentException if repository for provided type is not registeterd
+     * @throws InvalidArgumentException if repository for provided type is not registered
      */
     public function createRepository($type, $config)
     {
diff --git a/src/Composer/Repository/Vcs/VcsDriverInterface.php b/src/Composer/Repository/Vcs/VcsDriverInterface.php
index 47023a91a..44486f007 100644
--- a/src/Composer/Repository/Vcs/VcsDriverInterface.php
+++ b/src/Composer/Repository/Vcs/VcsDriverInterface.php
@@ -84,9 +84,9 @@ interface VcsDriverInterface
     /**
      * Checks if this driver can handle a given url
      *
-     * @param  IOInterface $io      IO instance
+     * @param  IOInterface $io   IO instance
      * @param  string      $url
-     * @param  bool        $shallow unless true, only shallow checks (url matching typically) should be done
+     * @param  bool        $deep unless true, only shallow checks (url matching typically) should be done
      * @return bool
      */
     public static function supports(IOInterface $io, $url, $deep = false);
diff --git a/src/Composer/Repository/VcsRepository.php b/src/Composer/Repository/VcsRepository.php
index 048a085f7..d26e37613 100644
--- a/src/Composer/Repository/VcsRepository.php
+++ b/src/Composer/Repository/VcsRepository.php
@@ -145,7 +145,7 @@ class VcsRepository extends ArrayRepository
                 if (isset($data['version'])) {
                     $data['version_normalized'] = $this->versionParser->normalize($data['version']);
                 } else {
-                    // auto-versionned package, read value from tag
+                    // auto-versioned package, read value from tag
                     $data['version'] = $tag;
                     $data['version_normalized'] = $parsedTag;
                 }
@@ -200,7 +200,7 @@ class VcsRepository extends ArrayRepository
                     continue;
                 }
 
-                // branches are always auto-versionned, read value from branch name
+                // branches are always auto-versioned, read value from branch name
                 $data['version'] = $branch;
                 $data['version_normalized'] = $parsedBranch;
 
diff --git a/src/Composer/Script/Event.php b/src/Composer/Script/Event.php
index 239d494c8..2252ad966 100644
--- a/src/Composer/Script/Event.php
+++ b/src/Composer/Script/Event.php
@@ -41,7 +41,7 @@ class Event
      * Constructor.
      *
      * @param string      $name     The event name
-     * @param Composer    $composer The composer objet
+     * @param Composer    $composer The composer object
      * @param IOInterface $io       The IOInterface object
      */
     public function __construct($name, Composer $composer, IOInterface $io)
diff --git a/src/Composer/Script/EventDispatcher.php b/src/Composer/Script/EventDispatcher.php
index a1f9c163d..2b1a05767 100644
--- a/src/Composer/Script/EventDispatcher.php
+++ b/src/Composer/Script/EventDispatcher.php
@@ -40,8 +40,9 @@ class EventDispatcher
     /**
      * Constructor.
      *
-     * @param Composer    $composer The composer instance
-     * @param IOInterface $io       The IOInterface instance
+     * @param Composer        $composer The composer instance
+     * @param IOInterface     $io       The IOInterface instance
+     * @param ProcessExecutor $process
      */
     public function __construct(Composer $composer, IOInterface $io, ProcessExecutor $process = null)
     {
diff --git a/src/Composer/Util/RemoteFilesystem.php b/src/Composer/Util/RemoteFilesystem.php
index 537be3655..8f64b4407 100644
--- a/src/Composer/Util/RemoteFilesystem.php
+++ b/src/Composer/Util/RemoteFilesystem.php
@@ -35,7 +35,8 @@ class RemoteFilesystem
     /**
      * Constructor.
      *
-     * @param IOInterface $io The IO instance
+     * @param IOInterface $io      The IO instance
+     * @param array       $options The options
      */
     public function __construct(IOInterface $io, $options = array())
     {
diff --git a/src/Composer/Util/Svn.php b/src/Composer/Util/Svn.php
index 865fd1387..d979a2ddb 100644
--- a/src/Composer/Util/Svn.php
+++ b/src/Composer/Util/Svn.php
@@ -224,8 +224,6 @@ class Svn
     /**
      * Detect Svn Auth.
      *
-     * @param string $url
-     *
      * @return bool
      */
     protected function hasAuth()