Overtype and Insert Modes

When Update Processor is first entered it is in overtype mode. This means that characters typed overwrite the characters on the screen. Insert mode is used to insert new text just in front of the text beginning at the cursor. When text is entered in the insert mode, the following text is opened and shown on the next line until insert mode is exited or a cursor movement command is typed.

The letter O displays at the top right corner of the screen when in overtype mode; the letter I displays when in insert mode. As text is entered in either mode, Update Processor word wraps the text as necessary. That is, if a character string is longer than the remaining space on the current line, the entire string is moved to the next line. This means typing can be done continuously within a paragraph (attribute) without pressing the ENTER.

NOTE	The terminal line width is determined by a value specified in the term command.

CTRL+R	Toggle between overtype and insert modes. When insert mode is entered, the text following the cursor is moved to the next line and as many lines of new text as needed may be entered. To create a new attribute (paragraph), press CTRL+M or ENTER, while in insert mode. To return to overtype mode, press CTRL+R again.
Paragraphs	To create a new paragraph in the middle of existing text, enter the insert mode and press ENTER. This terminates the current paragraph and prompts with the next attribute number. If the cursor is at the end of an item, CTRL+M creates a new paragraph whether in input mode or not.
CTRL+M	Same as ENTER. Always moves the cursor to the beginning of the next attribute. If in insert mode or at the end of an item, a CTRL+M creates a new paragraph. If Update Processor is being controlled by a dictionary, CTRL+M does not create a new attribute mark, rather the cursor goes to the next attribute.