In ZWCAD, the background sharpness of the MTEXT element can be controlled using the Property menu.
1. Close ZWCAD
2. Create an MTEXT element (MTEXT style can be normal or annotative)
3. Highlight the MTEXT element
4. Open the Properties menu
5. We select the Background Mask property
6. Click on the icon on the right … to activate the background color
7. We make settings for the background mask.