Invisible variation selector number 245, follows a character to request a particular glyph variant, used for CJK ideographic variation sequences.
U+E01E3VARIATION SELECTOR-244U+E01E5VARIATION SELECTOR-246U+E01E2VARIATION SELECTOR-243U+E01E6VARIATION SELECTOR-247U+E01E1VARIATION SELECTOR-242U+E01E7VARIATION SELECTOR-248U+E01E0VARIATION SELECTOR-241U+E01E8VARIATION SELECTOR-249U+E01DFVARIATION SELECTOR-240U+E01E9VARIATION SELECTOR-250U+E01DEVARIATION SELECTOR-239U+E01EAVARIATION SELECTOR-251240 characters in the Variation Selectors Supplement Unicode block, from number 229.
U+E01E4VARIATION SELECTOR-245U+E01E5VARIATION SELECTOR-246U+E01E6VARIATION SELECTOR-247U+E01E7VARIATION SELECTOR-248U+E01E8VARIATION SELECTOR-249U+E01E9VARIATION SELECTOR-250U+E01EAVARIATION SELECTOR-251U+E01EBVARIATION SELECTOR-252U+E01ECVARIATION SELECTOR-253U+E01EDVARIATION SELECTOR-254U+E01EEVARIATION SELECTOR-255U+E01EFVARIATION SELECTOR-256