void lclrq (row, minl, maxl) CURSOR.C Level 1
int row The row where some erasing is to occur.
int minl The column in which the erasing is to start.
int maxl The last column in the line to be erased.
lclrq() clears the graphics screen according to the arguments specified. A row is ten screen pixels high and a column is eight pixels wide. (0, 0) is at the top left of the screen.

For example, a call to lclrq(3, 5, 20) would clear pixel rows 30 39 and pixel columns 40 159.

 lclrq() can be used to clear an area of the screen for use by a call to putsgq().