+ hg help
 add         add the specified files on the next commit
 addremove   add all new files, delete all missing files
 annotate    show changeset information per file line
 cat         output the latest or given revision of a file
 clone       make a copy of an existing repository
 commit      commit the specified files or all outstanding changes
 copy        mark a file as copied or renamed for the next commit
 diff        diff working directory (or selected files)
 export      dump the header and diffs for one or more changesets
 forget      don't add the specified files on the next commit
 heads       show current repository heads
 help        show help for a given command or all commands
 identify    print information about the working copy
 import      import an ordered set of patches
 init        create a new repository in the current directory
 locate      locate files matching specific patterns
 log         show the revision history of the repository or a single file
 manifest    output the latest or given revision of the project manifest
 parents     show the parents of the working dir or revision
 paths       show path or list of available paths
 pull        pull changes from the specified source
 push        push changes to the specified destination
 rawcommit   raw commit interface
 recover     roll back an interrupted transaction
 remove      remove the specified files on the next commit
 revert      revert modified files or dirs back to their unmodified states
 root        print the root (top) of the current working dir
 serve       export the repository via HTTP
 status      show changed files in the working directory
 tag         add a tag for the current tip or a given revision
 tags        list repository tags
 tip         show the tip revision
 undo        undo the last commit or pull
 update      update or merge working directory
 verify      verify the integrity of the repository
 version     output version and copyright information
+ hg -q help
 add         add the specified files on the next commit
 addremove   add all new files, delete all missing files
 annotate    show changeset information per file line
 cat         output the latest or given revision of a file
 clone       make a copy of an existing repository
 commit      commit the specified files or all outstanding changes
 copy        mark a file as copied or renamed for the next commit
 diff        diff working directory (or selected files)
 export      dump the header and diffs for one or more changesets
 forget      don't add the specified files on the next commit
 heads       show current repository heads
 help        show help for a given command or all commands
 identify    print information about the working copy
 import      import an ordered set of patches
 init        create a new repository in the current directory
 locate      locate files matching specific patterns
 log         show the revision history of the repository or a single file
 manifest    output the latest or given revision of the project manifest
 parents     show the parents of the working dir or revision
 paths       show path or list of available paths
 pull        pull changes from the specified source
 push        push changes to the specified destination
 rawcommit   raw commit interface
 recover     roll back an interrupted transaction
 remove      remove the specified files on the next commit
 revert      revert modified files or dirs back to their unmodified states
 root        print the root (top) of the current working dir
 serve       export the repository via HTTP
 status      show changed files in the working directory
 tag         add a tag for the current tip or a given revision
 tags        list repository tags
 tip         show the tip revision
 undo        undo the last commit or pull
 update      update or merge working directory
 verify      verify the integrity of the repository
 version     output version and copyright information
+ hg add -h
hg add: option -h not recognized
hg add [FILE]...

 -I --include 
   include path in search
 -X --exclude 
   exclude path from search

add the specified files on the next commit
+ hg add --skjdfks
hg add: option --skjdfks not recognized
hg add [FILE]...

 -I --include 
   include path in search
 -X --exclude 
   exclude path from search

add the specified files on the next commit
+ hg help diff
hg diff [-r REV1 [-r REV2]] [FILE]...

 -r --rev 
   revision
 -I --include 
   include path in search
 -X --exclude 
   exclude path from search

diff working directory (or selected files)
+ hg help foo
hg: unknown command foo
+ hg -q commands
hg: unknown command 'commands'
 add         add the specified files on the next commit
 addremove   add all new files, delete all missing files
 annotate    show changeset information per file line
 cat         output the latest or given revision of a file
 clone       make a copy of an existing repository
 commit      commit the specified files or all outstanding changes
 copy        mark a file as copied or renamed for the next commit
 diff        diff working directory (or selected files)
 export      dump the header and diffs for one or more changesets
 forget      don't add the specified files on the next commit
 heads       show current repository heads
 help        show help for a given command or all commands
 identify    print information about the working copy
 import      import an ordered set of patches
 init        create a new repository in the current directory
 locate      locate files matching specific patterns
 log         show the revision history of the repository or a single file
 manifest    output the latest or given revision of the project manifest
 parents     show the parents of the working dir or revision
 paths       show path or list of available paths
 pull        pull changes from the specified source
 push        push changes to the specified destination
 rawcommit   raw commit interface
 recover     roll back an interrupted transaction
 remove      remove the specified files on the next commit
 revert      revert modified files or dirs back to their unmodified states
 root        print the root (top) of the current working dir
 serve       export the repository via HTTP
 status      show changed files in the working directory
 tag         add a tag for the current tip or a given revision
 tags        list repository tags
 tip         show the tip revision
 undo        undo the last commit or pull
 update      update or merge working directory
 verify      verify the integrity of the repository
 version     output version and copyright information