When you order TinTin++ to read a commando file, tintin parses all the text in the file. You can use command files to keep aliases/actions in, login to a mud(name, password etc..) and basically all kinds of commands.
You can make the command files with either a text editor (strongly suggested), or use the #write command to write out a file.
Commands for files:
#read filename -- read and execute the file.
#write filename -- write all actions/aliases/substitutes known for the current session to a file.