Insert Zero Block
This command inserts a block of zeros at the specified position.
Depending in the current insertion mode, the Insert Zero Block command either inserts or overwrites the existing data at the insert position.
The Insert Zero Block command works slightly differently from the Insert Immediate Data command. While in most cases you can use either command to insert a block of zero bytes, these commands works differently for sparse files. Insert Zero Block inserts sparse zeros, whereas Insert Immediate Data always inserts actual data occupying disk space.
As in other dialogs, FlexHEX assumes the number is hexadecimal if it contains hexadecimal digits A to F. Otherwise it is treated according to the Dec/Hex selector.