i have a list lets call it as
List1 in List1 list i have fields like the following
List1
ID
Title
.... also i have List2 and its columns like the following
List2
ID
Title
Type
now i added a lookup field from List2 to List1 and now my List1 columns becomes
List1
ID
Title
List2
List2:Title
when i look at the List2:Title i see its internal name is List2_x003a_Title
i easily can understand that ':' is represented as x003a ie the hex code of ':' is x003a
after than i deleted column and readded it. oooooo what i see is that the field added with the same external name but this time its INTERNAL NAME
List2_x003A_Title
can someone explain the reason. when the hex code is x003a or x003A