HELP [cmd | PREFIX] H
If this command is entered without parameters, the result is a list of all commands, special help texts and prefix commands displayed in the window. The command words and special help texts in this list are spelled with capital and small letters. The capital letters at the beginning of a command word denote the minimal abbreviation. For example,
COpydenotes that the COPY command can be entered as COPY, COP or CO but not as C. The list of the commands is sorted according to the minimal abbreviations, i.e. not exactly alphabetically with regard to the full command words.
If you specify a command name as parameter of the HELP command, you receive the syntax and meaning of that command. In the first line of the output, there is the complete command syntax on the left. In the spelling of the syntax, vertical lines and square brackets have the meaning explained in section Notation. In the first line on the right, there is a short characterization of the command in English. The rest of the lines of the output describe the commands as good as possible within a maximum of five lines. This restriction has been chosen to make it possible for you to watch the current section of the workfile and the help text at the same time. Of course, this works only as long as you do not want to enter a command.
If you specify the parameter PREFIX in addition to the command name, you will get the help text for the according prefix command. This parameter is necessary for those commands that exist both as a command line command and as a prefix command, e.g. D or I.
The longer version of the help text is only available in the manual at hand, that is relevant in cases of doubt.
With the command HELP you can have some special help texts displayed in the window. Formally, this works in the same way as the display of help texts of commands; the parameter words simply are no commands.