The sentences below which are found at the end of my post, have two errors.
>Any theory of the verbs should be able to account for the fact that
>imperative+WAW+YIQTOL in most cases stress the imperative force, while
>imperative+WAW+QATAL in most cases signal finality.
The correct sentences should be:
Any theory of the verbs should be able to account for the fact that
imperative+WAW+YIQTOL in most cases *signal finality*, while
imperative+WAW+QATAL in most cases *stress the imperative force*.