Thanks for the reply.

Glad I could help.

$A$1

The first $ (before the A) holds the colums in A.

The second $ (before the 1) holds the row in 1.


$A$1 and copy to the right gives the result $A$1 and $A$1 (it won't change the column and won't change the rows)

A$1 and copy to the right gives the result B$1 and C$1

A$1 and copy below gives the result A$1 and A$1 (it won't change the row)

a1 and copy below gives the result a2 and a3 (it will change the row)

Hope I explainde well enough.