for

for <block number> operations....; for TAG <string> operations.....

Variants:

• • for TAG <string> c1 c2 0.01*c2

Searches hashtag TAG and <string> in that line. For each DATA block whose TAG contains the string it applies the column operations .

• for ALL sort

(character * can be used instead of "ALL" or "all")

for * sort

applies sort to all data blocks (NOTE the difference if you try to use only "sort")

• for 3 c1 c2 sqrt(1.34)

applies the column operations to data set block 3 alone