HP 5961-0509 manual BS Backspace, HT Horizontal Tab

BS - Backspace

Moves the current active position (CAP) left a distance equal to the width of the last printed symbol or space. If the active position is already at the left margin, no action is taken. If the cursor is currently beyond the right margin, BS positions the cursor just to the left of the right margin. When using fixed pitch fonts, the Backspace distance is defined by the current print pitch (HMI setting).

When using proportionally-spaced fonts, a single Backspace moves back to center the overstrike character. After printing the overstriking character, the cursor returns to its position prior to the Backspace.

Multiple backspaces each move back the distance of the last printed symbol or space. For example, if “world” was printed with a proportional font and then 5 backspaces were performed, the distance moved back would be five times the width of the “d.”

HT - Horizontal Tab

Moves the current active position (CAP) to the next tab stop on the current line. The tab stops are at the left margin and every 8th column between the left margin and the right bound of the logical page. If the new horizontal position crosses the right margin, the new horizontal position is set to the right margin. If the current HMI value is 0, the command is ignored.

EN Horizontal Cursor Positioning Control Codes 6-9