PdTRAV is equipped with an interactive textual user interface. It is intended for users who plan not to link PdTRAV packages as an object library. Commands are issued on a line by line basis.
If the first character of a command is the exclamation mark "!", a system call is issued instead. This allows to execute basic system commands such as "more", "ls", etc.
If the first character of a command is "#" the command is ignored, i.e., it is supposed to be a comment. This is especially useful to write script files. In fact, the command "source" gives the possibility to read from a source-script file instead that from standard input.
If the first character of the command is "@" this indicates that a script file with parameter is used. For example
@script1.cmd a b cruns the script file script1.cmd (containing some $1, $2 and $3) with parameters a, b and c.
For more information on the commands see the documentation in the cmd
doc
directory and the on-line documentation (command help).