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need to work with malware which uses bidi strings. They not so widely documented and I've found part of them in one place, part in another. For now I have these:

 1. LRM - 0x200E
 2. RLM - 0x200F
 3. LRE - 0x202A
 4. RLE - 0x202B
 5. PDF - 0x202C
 6. LRO - 0x202D
 7. RLO - 0x202E

I want to ask if it is all UNICODE special characters, or I missed something.

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1 Answer 1

up vote 1 down vote accepted

Yes, they are Unicode characters related to directionality. They are used to control writing direction; they are invisible control characters, i.e. they are not displayed graphically, but they may affect the way printable characters are presented (left-to-right vs. right-to-left writing direction). Their effects are normatively defined in Unicode Standard Annex #9, Unicode Bidirectional Algorithm.

Generally, to find information about specific characters by their Unicode number (code point), Unicode Character Search at Fileformat.info is a good starting point.

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