Final answer:
The student appears to be asking about a keyboard shortcut for editing a control point in software; Adobe Photoshop uses the 'A' key for its Direct Selection Tool, but the specific shortcut depends on the program being used.
Step-by-step explanation:
It appears that the student might be asking about a keyboard shortcut used within a specific software application to 'touch up a point', which could refer to editing or refining a control point in graphic design or photo editing applications. However, without knowing the specific program they are using, it's challenging to provide an exact key combination. In Adobe Photoshop, for instance, the Direct Selection Tool (shortcut 'A') allows users to select and modify points. In other programs such as Illustrator, the Anchor Point Tool can be used for similar purposes. If you are using a different software, please specify, and I can give you the precise key combo.