| Max amount of RAM (in Mb) to be used |
| If y, change o and d parameters on the reversed axis;|
if i, don't change o and d
bool verb=n [y/n]
| Verbosity flag |
| Which axis to reverse.|
To reverse a given axis, start with 0,
add 1 to number to reverse n1 dimension,
add 2 to number to reverse n2 dimension,
add 4 to number to reverse n3 dimension, etc.
Thus, which=7 would reverse the first three dimensions,
which=5 just n1 and n3, etc.
which=0 will just pass the input on through unchanged.