Crossed out and slash separated text styles.
S̸l̸a̸s̸h̸e̸d̸ t̸e̸x̸t̸
S̷l̷a̷s̷h̷e̷d̷ t̷e̷x̷t̷
S/l/a/s/h/e/d/ /t/e/x/t
S\l\a\s\h\e\d\ \t\e\x\t
S̸̶l̸̶a̸̶s̸̶h̸̶e̸̶d̸̶ t̸̶e̸̶x̸̶t̸̶
Combining solidus characters draw a slash through the letter they follow. The long solidus crosses the whole letter, and the short one makes a small stroke. Other variants insert a slash or backslash between letters or combine a slash with strikethrough.
Appearance depends on the font of the place you paste into, as the mark must line up with each letter.
No. These are Unicode characters that happen to look like styled letters, so they paste into any app that accepts text, with no font installation. Because they are different characters from normal letters, search and screen readers may handle them differently.
Combining marks follow the glyph shapes of the font in use. Some fonts position them better than others.
Yes, with the Unicode to Text Converter, which can strip combining marks.