Possible Clues:

• Slanting line
• Crooked Shakespearean character enters country from the south
• Green Goddess comes round at length: it crosses the square
• Shortcut, at times
• Line from corner to corner
• One may cross and another may make one cross
• *Shortcut path, maybe
• Raise help with a long organised line
• Moor's enemy breaks up ground that's sloping