Hello,
I have written a macro which operates by means of ctrl + Q. (This letter was
merely an arbitrary choice!)

The action is as follows:-
1. Enter new data in a cell then press <ENTER
2. The data is then automatically compared with the contents of a cell on
different sheet
3. If the new cell data is greater than or equal in value to that data in
the cell on the other sheet then change the font colour of the new cell data
to red and display the difference between the two cells in a cell in another
column
4. Otherwise just display the new contents of the cell in a black font
colour as normal and do nothing else

I have the code to do all this in the macro but I want to make the code run
automatically when I press <ENTER after updating the contents of any one of
several cells on a worksheet.

I don't know how to do this by means of an IF function, as it requires
several things to happen as the data in the cell is entered.

Can anyone tell me how to do it?

Thank you in advance for your kind help.

Steve