The base TeX system understands about 300 commands, called primitives.

He turns on his computer and types in a command called "date."

But by using a command called grep, which searches through text files without opening them, he can at least verify that the word manila occurs in two places.

The troff typesetting system includes sets of commands called macros that are run before starting to process the document.

It also includes a command called rc-update which manages runlevels.

For this purpose, Microsoft has created a clever command called "Show numbers."

Another tactic is to create scripts of commands called macros to automate tedious tasks.

Under these systems the more robust command called "mkfs" exists.

Editing the model:-Some CAD systems can automatically remove hidden lines using a command called hide.

There were other, harsher commands being called through the forest now and Kerrick stopped, cupping his hand to his ear.