Moving to the next paragraph: "Import a CAD File: Import a CAD file (e.g., IGES, STL, or DXF) to begin working with your design." "Import" can be Transfer. "CAD File" is a term, so leave it. The file types like IGES, STL, DXF are also proper terms, so they stay. "Working with your design" – "Working" becomes Engaging, "your design" is okay as is.

- "Download" could be "Obtain|Acquire|Retrieve" - "Install" might be "Set up|Implement|Deploy" - "Click" as "Select|Activate|Engage" - "Begin" as "Start|Commence|Initiate" - "Complete" as "Finish|Complete|Conclude" - "Run" as "Execute|Launch|Operate" - "Installation file" could be "setupinstallerpackage" - "Follow" as "Adhere to|Observe|Complete" - "Prompts" as "Instructions|Guidance|Steps"

Alternatively, perhaps the user is asking for guidance on how to process their own text where they have words in the format opt1, and they want to ensure all words in that format are converted to have three synonyms each. But without actual instances of the in the provided text, it's hard to proceed.