Adobe InDesign CC 2015 - Manual (Page 275)

270
Text
Last updated 6/6/2015
List of hidden characters
Hidden character What it represents
End of Paragraph
Soft return (line break)
Space
End of Story
Discretionary Hyphen
Nonbreaking Hyphen
Tab
Right Indent Tab
Indent to Here
End Nested Style Here
Non-Joiner
Ideographic Space
Em Space
En Space
Nonbreaking Space
Nonbreaking Space (Fixed Width)
Hair Space
Sixth Space
Thin Space
Quarter Space
Third Space
Punctuation Space
Figure Space
Flush Space
Column Break