Temperature, 329Testautomatic, 35-36for seven-bit system, 309Top of form, 31-33, 103-104CHR$(12) sends the paper to top of form. ESCape “C” resets it tocurrent paper position. ESCape “@” resets form length to default andsets top of form to current line.with skip-over-perforation, 109See also Reset CodeTractorbuilt-in, 24-28cover, 14, 19removable, 14-15, 28-31Troubleshooting, 301-315TRS-80, 38, 40, 307-309, 313Type style chart, 317UUp arrow. See Exponent characterUnderline Mode, 70-72ESCape “-1” turns underline on; ESCape “-0” turns it off.Unidirectional Mode, 83-85ESCape “U1” activates it; ESCape “U0” turns it off.ESCape "<" turns it on for one line only.User-defined characters, 199-213ESCape “&“CHR$(n1)CHR$(n2)CHR$(n3) defines characters.ESCape “:“CHR$(n1)CHR$(n2)CHR$(n3) downloads ROMcharacters into RAM.attribute byte, 203-205compared to ROM characters, 199control codes as characters, 208-211DIP switch setting for, 200double-high and double-wide, 215-223downloading, 207Reset code with, 207troubleshooting, 303VVertical tabs. See Tabs, vertical250