A short, often cryptic, phrase used in crossword puzzles to prompt solvers to identify a specific term, in this instance, a publication containing cartographic representations. An example might be “Road guide” or “World reference.”
These concise descriptions serve a crucial function in crossword puzzles, providing just enough information to challenge solvers while remaining solvable. They demand a degree of lateral thinking and vocabulary knowledge, contributing to the puzzle’s overall difficulty and intellectual engagement. Historically, the complexity of clues has evolved alongside the popularity of crosswords, reflecting changing linguistic trends and cultural references.