HP LaserJet 4100 HP PCL/PJL reference (PCL 5 Printer Language) - Technical Ref - Page 240

UL, User-Defined Line Type This command creates line types by specifying gap patterns, which define the lengths of spaces and lines comprising a line type. UL index [,gap1,...,gap20;] or UL [;] Parameter index gaps Format clamped integer clamped real Functional Range 1 through 8 Default - 0 to 32767 default line types The UL command allows you to define and store your own line types. The command does not itself select a line type. Use the LT command to select the line type once you have defined it with UL. z No Parameters - Defaults all line types (refer to the LT command). z Index - Identifies the number of the line type to be redefined. Specifying an index number without gap parameters sets the line type identified by the index to the default pattern for that number. The index number may not be 0. • The index parameter uses absolute values, so (UL-n) is the same as (ULn). Redefining a standard fixed line type automatically redefines the corresponding adaptive line type. z Gaps - Specify alternate pen-down and pen-up stretches in the line type pattern; if gaps are numbered starting with 1, odd numbered gaps are pen-down moves, even numbered gaps are pen-up moves. The first gap is a pen-down move. Gap values are converted to percentages of the LT command's pattern length parameter. • A maximum of 20 gaps are allowed for each user-defined line type. Gap values must be non-negative; a gap value of zero produces a dot if specified for an odd numbered gap that is preceded or followed by a non-zero even-numbered gap. The sum of the gap parameters must be greater than zero. 22-44 The Line and Fill Attributes Group EN