lispdoc - results for *print-readably*

Variable: If true, all objects will be printed readably. If readable printing is impossible, an error will be signalled. This overrides the value of *PRINT-ESCAPE*.
 Mentioned in:
CLtL2 - 22.1.2. Parsing of Numbers and Symbols
CLtL2 - 22.1.4. Standard Dispatching Macro Character Syntax
CLtL2 - 22.1.6. What the Print Function Produces
CLtL2 - 22.3.1. Output to Character Streams
CLtL2 - 27.6. Pretty Printing Dispatch Tables
CLtL2 - 28.2. Functions in the Programmer Interface
PCL - file output
PCL - whats next
Successful Lisp - chapter06