Are character descriptions such as the one below indented?

[MARY looks nervous. She grabs her handbag and slowly leaves the house.]

No. That shows her movement at a specific time.

So, basically character descriptions are not indented, right?

Character descriptions are usually found at the beginning of the play with the list of characters.

A character description looks something like this:

Mary -- shy, 22-year-old sister of Mark.

Character descriptions in a screenplay or script are typically not indented. Instead, they are often centered in the middle of the page or aligned with the left margin. However, the specific formatting of character descriptions can vary depending on the style guide or industry standards being followed. It's essential to consult the specific guidelines provided by the organization or production company to ensure correct formatting.