I know that FS points to Thread Environment Block - which is seen by the address at the right part of what OllyDbg shows:
What does this value 0x53 mean? Does it have some connection with the address
0x7EFDD000? If to change FS value to 0x63 (for example), the address to the right becomes 0:
Likewise, if to change another segment register to 0x53, it will be also pointing to TEB:
How should we interpret all the things?