You are looking at a command called describe

describe {object}
describe {object} as {text}

You can add some extra description to an object.

If you just type in an objects name you can re-edit its current description.
eg describe the mouse

If you use the 'as {text}' method you can type the whole description on the one command line.
eg:describe the mouse as which has gloppy ears

This is useful when using the 'dot space' delmiter between commands on the one line.
eg:create a fig. describe it as bursting with freshness. paint it as green. lock it

Note: usually the description starts with the word 'which' so it looks correct when a player looks at it eg:
a mouse which has floppy ears


if your planning on creating an object and adding a description, you will find that it automatically splits at the words which, that, for and by.
eg:create a mouse which has floppy ears
Code