PChar related functions

Most PChar functions are the same as their counterparts in the STRINGS unit. The following functions are the same :

1. StrCat : Concatenates two PChar strings.
2. StrComp : Compares two PChar strings.
3. StrCopy : Copies a PChar string.
4. StrECopy : Copies a PChar string and returns a pointer to the terminating null byte.
5. StrEnd : Returns a pointer to the terminating null byte.
6. StrIComp : Case insensitive compare of 2 PChar strings.
7. StrLCat : Appends at most L characters from one PChar to another PChar.
8. StrLComp : Case sensitive compare of at most L characters of 2 PChar strings.
9. StrLCopy : Copies at most L characters from one PChar to another.
10. StrLen : Returns the length (exclusive terminating null byte) of a PChar string.
11. StrLIComp : Case insensitive compare of at most L characters of 2 PChar strings.
12. StrLower : Converts a PChar to all lowercase letters.
13. StrMove : Moves one PChar to another.
14. StrNew : Makes a copy of a PChar on the heap, and returns a pointer to this copy.
15. StrPos : Returns the position of one PChar string in another?
16. StrRScan : returns a pointer to the last occurrence of on PChar string in another one.
17. StrScan : returns a pointer to the first occurrence of on PChar string in another one.
18. StrUpper : Converts a PChar to all uppercase letters.

The subsequent functions are different from their counterparts in STRINGS, although the same examples can be used.