How to make invisible attribute to be visible in CAD?

Issue: In CAD software,after the attribute is defined as attribute block, the attribute is invisible. How to make it visible?

Solution: the attribute is invisible because we clicking on the 'Hidden' option when we define it (refer to following image). The solution is to set variable ATTDISP=ON. The variable ATTDISP is used to control the visibility of attribute, there are three options: ON/OFF/Normal. The option ON help to make all attribute to be visible no matter it is defined as hidden or not, and OFF make the opposite effect. The option Normal is used to let the attributes to keep their original visible setting when they are defined. 

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