163 rectangular & random grids, 1988 visual modeling with logo201M:BOXFLAG, M:BOX, push&pop, random, RECORD.POS, RESTORE.POS
163 rectangular & random grids, 1988 visual modeling with logo174FLAG globalCSTEP, FLAG, global, grid, jake-a-torial, RSTEP
163 rectangular & random grids, 1988 visual modeling with logo181MAYAN GRID1FLAG, LAY, RECORD.POS, recursion, RESTORE.POS
1992 learning mathematics and logo, chapter 12366 glideFLAG, GLIDE, HALFTURN, PERPENDICULAR, REFLECT, tile, transformation
1992 learning mathematics and logo, chapter 12366 zigagFLAG, HALFTURN, mirror, PERPENDICULAR, REFLECT, transformation, ZIGZAG
