exactly right, not_essence2. it is important to spend a good amount of time learning about the tools used in these missions. while one needn't know everything about every tool, it isn't recommended to search for the command needed just for a specific mission and move on. one may need these tools in the future, so why not get well-acquainted with them now?
on the helping side of things, read the wikipedia article on the Server Side Includes (SSI) server-side scripting language
and view the tables of directives. in these tables one should find directives and example script uses. choose which one pertains to the mission directly, study its form and what you can alter, and try increasing your available options with agglutination of command suffixes.