HP LaserJet 4100 HP PCL/PJL reference (PCL 5 Printer Language) - Technical Ref - Page 107

Half-Line Feed Command The Half-Line Feed command moves the cursor to the same character position one half-line down. The distance moved for a Half-Line Feed is one-half of the current line spacing (defined by the last VMI or line spacing setting). ? = Vertical Cursor Positioning Control Codes Two control codes can be used to position the cursor vertically. These control codes are explained below. LF - Line Feed Advances the current active position (CAP) to the same horizontal position on the next line. The distance to the next line is defined by the current line spacing (defined by the last VMI or line spacing setting). (Refer to "Line Termination Command" later in this chapter.) FF - Form Feed Advances the current active position (CAP) to the same horizontal position at the top of the text area on the next page. (Refer to "Line Termination Command" later in this chapter.) EN Half-Line Feed Command 6-13