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When using CAD drawing software to create drawings, sometimes the CAD fonts appear as boxes. What is the reason for this? How can this problem be solved? Next, let’s take Haochen CAD software as an example to give you a detailed introduction! When faced with such a problem, many people feel confused and don’t know where to start. It’s likely that this image wasn’t drawn by the person themselves, or they don’t even know what parameters were adjusted. Reason why CAD fonts appear as borders: First of all, I’d like to say that there is nothing wrong with such drawings; it only takes one setting change to restore the normal display of the text. In CAD drawings, there is often a large amount of text. If TTF fonts from the operating system, such as SimSun or Heiti, are used for this text, it can affect the performance of CAD; it may cause slower panning and zooming operations. Therefore, CAD provides a feature that allows us to display only the outlines of the text without showing its actual content, which helps to improve operation speed. Method to set CAD fonts to be displayed as outlines: The variable that controls whether only the outline of the text is shown is QTEXTMODE; its default value is 0. When set to 1, the text will be displayed as an outline. If you find that the variable names are too long and difficult to remember, you can go directly to the options dialog to change the settings. The steps are as follows: 1. Enter OP in the command line to open the options dialog. 2. Then switch to the [Display] tab, and in that tab, uncheck the [Show only text border] option. As shown in the figure below: Please note the instructions in the image above; changing this option on or off does not result in an immediate change in the way the drawings are displayed. It is necessary to regenerate them manually, that is, by entering the [RE command] and pressing Enter, for the text display to change. This variable is stored in the drawing; in other words, setting this variable to 1 in one drawing will not affect the results in other drawings. When working with complex drawings, this parameter can be used to increase the operation speed. The above are the reasons why CAD fonts appear as boxes in the Haochen CAD software, along with the solutions; I hope this will be helpful to everyone~