It allows you to see and review all assigned and active variables in a block. This is a powerful extension of the functions of saving and running the block.
There are two main functions of the command.The first function is to execute a block and view all variables.
The second function is to show all the variables assigned to a variable.
there are three commonly used functions for viewing and saving blocks.
view a block
save a block
run a block
If you want to use the command, go to User Preferences and search for the block (example, view all variables), if it is not yet selected, click the "view a block" button on the right of the block. This will work on the first block that has the name "view all variables", if there are no such blocks, click the "view a block" button in the User Preferences.
To view the assigned variables to a variable, go to the User Preferences, and select variables from the block assigned to a variable (example, variables assigned to "a variable").
The above functions are simple to use.However, you may encounter certain situations, for example, you can save the block after editing (view all variables), but cannot run it (run a block).
The reason is that the function to save the block will be disabled, or even that the block cannot be executed (see the following example). This kind of problem is caused by the block generated by only one block and not saved yet, but that block must be saved before the program can run the block.
If the block is saved, and you are trying to run it after saving, it will show an error message and no operation can be performed (see the following example).
To solve this problem, you need to click the "Save" button, save the block, then go to User Preferences and check the block you saved, after that, the program will run the block again. It is not necessary to save the block again.
During the operation of the block, each block saves a copy of variables in a text file. Text file formats (including binary formats) cannot be saved, deleted or restored. When the operating system is launched, the text file format is automatically converted into a binary format, thus the operation can be restored (see the following example).