exactly the same thing as if `fld` were used to load an "unrepresentable"
value: nothing. if `fld` raised flags or exceptions then so would (should)
-`fmvis`.
+`fmvis`. these are immediates, statically-compiled. if the developer
+wants "invalid" data, statically-compiled into a binary, it is reasonable
+to assume they have good reasons for doing so.
**
3. The first clause of the verbal description of fishmv seems to assume
given that the bits are spread out in `DOUBLE()` format it seems unlikely.
if the bits were placed contiguously (sequentially) then it would indeed
-be a different matter.
+be a different matter: temporary storage for constants to be transferred
+directly (unmodified) to GPRs for example. but DOUBLE() formatting
+makes that not possible unfortunately.
**
4. The instruction names and mnemonics should be more consistent with the