indent vs oblique mark

indent

noun
  • A cut or notch in the margin of anything, or a recess like a notch. 

  • A certificate, or intended certificate, issued by the government of the United States at the close of the Revolution, for the principal or interest of the public debt. 

  • A stamp; an impression. 

  • A requisition or order for supplies, sent to the commissariat of an army. 

verb
  • To dent; to stamp or to press in; to impress 

  • To notch; to jag; to cut into points like a row of teeth 

  • To begin (a line or lines) at a greater or lesser distance from the margin. See indentation, and indention. Normal indent pushes in a line or paragraph. "Hanging indent" pulls the line out into the margin. 

  • To cut the two halves of a document in duplicate, using a jagged or wavy line so that each party could demonstrate that their copy was part of the original whole. 

  • To be cut, notched, or dented. 

oblique mark

noun
  • Synonym of slash ⟨/⟩, sometimes (generally proscribed) inclusive of similar marks such as the backslash ⟨\⟩. 

How often have the words indent and oblique mark occurred in a corpus of books? (source: Google Ngram Viewer )