|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().