Definitions for terms used in "bzr help commands"

[Reg. Charney]

The "bzr help commands" command uses the following terms, none of which 
have a definition or syntax that I can find:

BRANCH
DEST
DIR
FILE
FILENAME
FROM_LOCATION TO_LOCATION
FROM_NAME TO_NAME
LOCATION
NAME_PATTERN
NAMES
NICKNAME
OTHER_BRANCH
SELECTED
SOURCE
TOPIC

Please also note that some of the names seem to overlap, like FILE and 
FILENAME.

This is a real problem for me, because I do not know how to write the 
"bzr pull LOCATION" command since I don't know the format of a LOCATION 
when it is not on the local system.

P.S. Here is the list of the commands that use these terms and their 
basic formats:

bzr add [FILE...]
    Add specified files or directories.
bzr annotate FILENAME
    Show the origin of each line in a file.
bzr branch FROM_LOCATION [TO_LOCATION]
    Create a new copy of a branch.
bzr cat FILENAME
    Write a file's text from a previous revision.
bzr check [BRANCH]
    Validate consistency of branch history.
bzr commit [SELECTED...]
    Commit changes into a new revision.
bzr diff [FILE...]
    Show differences in working tree.
bzr export DEST
    Export past revision to destination directory.
bzr help [TOPIC]
    Show help on a command or other topic.
bzr ignore NAME_PATTERN
    Ignore a command or pattern.
bzr info [BRANCH]
    Show statistical information about a branch.
bzr init [LOCATION]
    Make a directory into a versioned branch.
bzr log [FILENAME]
    Show log of this branch.
bzr merge [BRANCH]
    Perform a three-way merge.
bzr missing [OTHER_BRANCH]
    Show unmerged/unpulled revisions between two branches.
bzr mkdir DIR...
    Create a new versioned directory.
bzr move SOURCE... DEST
    Move files to a different directory.
bzr mv [NAMES...]
    Move or rename a file.
bzr nick [NICKNAME]
    Print or set the branch nickname.
bzr pull [LOCATION]
    Pull any changes from another branch into the current one.
bzr push [LOCATION]
    Push this branch into another branch.
bzr remerge [FILE...]
    Redo a merge.
bzr remove FILE...
    Make a file unversioned.
bzr rename FROM_NAME TO_NAME
    Change the name of an entry.
bzr renames [DIR]
    Show list of renamed files.
bzr resolve [FILE...]
    Mark a conflict as resolved.
bzr revert [FILE...]
    Reverse all changes since the last commit.
bzr revno [LOCATION]
    Show current revision number.
bzr root [FILENAME]
    Show the tree root directory.
bzr status [FILE...]
    Display status summary.
bzr testament [BRANCH]
    Show testament (signing-form) of a revision.
bzr uncommit [LOCATION]
    Remove the last committed revision.
bzr upgrade [DIR]
    Upgrade branch storage to current format.