[Lazarus] Does Lazarus support a complete Unicode Component Library?

[Jürgen Hestermann]

Hans-Peter Diettrich schrieb:
 > Indexed access to characters is a low level operation, that should 
not be used in Unicode-aware applications without specific knowledge.

I often search for substrings, delete them from the string, insert other 
strings at certain places, etc.
How can you do all this without knowledge of the internal structure of 
the string?