About Using Fields in Text
A field in text contains instructions to display data that you expect to change during
the life cycle of a drawing.
When a field is updated, the latest data is displayed. For example, the value of
the FileName field is the name of the file. If the file name changes, the new file
name is displayed when the field is updated.
Fields can be inserted in any kind of text (except tolerances), including text in
table cells, attributes, and attribute definitions. When any text command is active,
Insert Field is available on the shortcut menu.
Some sheet set fields can be inserted as placeholders. For example, you can insert
SheetNumberAndTitle as a placeholder. Later, when the layout is added to a sheet set,
the placeholder field displays the correct sheet number and title.
Block placeholder fields can be used in block attribute definitions while you’re
working in the Block Editor.
A field for which no value is available displays hyphens (—-). For example, the
Author field, which is set in the Drawing Properties dialog, may be blank.
An invalid field displays pound signs (####). For example, the CurrentSheetName field,
which is valid only in paper space, displays pound signs if it is placed in model
Change the Appearance of a Field
The field text uses the same text style as the text object in which it is inserted.
By default, fields are displayed with a light gray background that is not plotted
Formatting options in the Insert Field control the appearance of the text that is
displayed. The options that are available depend on the type of field. For example,
the format for date fields includes options for displaying the day of the week and
the time, and the format for named object fields includes capitalization options.