That will automatically open the current technology book one is reading. If the automatic opening is not ideal one can set it so the Consequence is changing the quantity of a Record:
id
quantity
head
body
1
-1
Read Tech Book
When typing 1 in operation the quantity of this Record will be zero. If you have a Condition that is 'rq1 == 0' that will be evaluated to '1' and can trigger the Consequence 'c5'. Though this method needs one Karma expression to run 'c5' if 'rq1 == 0' and another to make it so if 'rq1 == 0' Condition then 'rq1' Consequence, making 'rq1' be '1' and not triggering the infinite opening of the Tech Book.