Last part: "High processing usage." CPU is a proper noun, so keep it as is. "Usage" can be replaced, though.
Another thing to watch out for is the structure of the sentences after spintax. They should still make sense grammatically. Sometimes, replacing a term might require adjusting the sentence structure slightly, but the user just wants synonyms, so keep the sentence structure as close as possible. fsmainui.exe
While working through each sentence, I'll look for each term that can be replaced with three synonyms. Sometimes, the same word might appear in different contexts, so need to check the context before replacing. For example, in "prevent malicious files," "prevent" could be "hinder," "block," "stop." Last part: "High processing usage
For the "Functionality of fsmainui.exe" paragraph: "triggered" becomes "activated|initiated|prompted". "Dialog box" could be "popup window|message window|notification box". Words like "potential risks" need alternatives like "possible security issues|anticipated dangers|unforeseen threats". They should still make sense grammatically
Let me go through each part step by step. First sentence: "The document validation plugin checks the file format and verifies that it conforms to the required structure." That seems good.