Symbol 2006 from ISO 7000 - Title/Meaning: Accordion fold 
Function/description: To identify the control or control position to set the machine to operate in the accordion fold mode, whereby the document sheets are folded in thirds with outer ends folded oppositely to form a ""Z-type"" folds.
Own work using: iso.org/obp/graphics/grs/afcfcb40-827e-499e-9f05-f53009e62618 200.png
Vectorization:  Mrmw