Many people search it for by different names like name space copy, blank characters, blank space text, empty character copy paste, blank space character, blank Unicode, empty text copy paste, invisible character copy paste, invisible text copy, invisible letter copy, and so many others. But ...
UnicodeHTMLDescriptionExampleCopy U+0009 Character Tabulation[ ] U+0020 Space[ ] U+00A0 No-Break Space[ ] U+00AD Soft Hyphen[] U+034F Combining Grapheme Joiner[͏] U+061C Arabic Letter Mark[] U+115F Hangul Choseong Filler[ᅟ] ...