You change the target's text to different text entirely. If the text is a spellbook or a scroll, you can change it to show a spell you know of secret page's level or lower. The replacement spell cannot be cast or used to prepare a spell. You can also transform the text into some other text you have written or have access to. You can specify a password that allows a creature touching the page to change the text back and forth. You must choose the replacement text and the password, if any, when you Cast the Spell.
Traits
An action with this trait requires a degree of mental concentration and discipline.
Effects and magic items with this trait involve false sensory stimuli.
You must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.
A visual effect can affect only creatures that can see it. This applies only to visible parts of the effect, as determined by the GM.