The use of keys convention is summarized in Table 1.
Table 1 Keys convention.
| Keys | Description |
|---|---|
| LMC | Left Mouse Click on an object to select that object |
| RMC | Right Mouse Click |
| Mouse Scroll | To zoom in/out |
| RMC on the selected layer | LMC on the selected layer to show options, the options are different for each type of layer. |
| Up arrow | Move the working space upward |
| Down arrow | Move the working space downward |
| Left arrow | Move the working space to the left |
| Right arrow | Move the working space to the right |
| Shift + LMC | Select a grid line segment or grid block |
| Shift + RMC | Use this combination and move the cursor to move the working space |
| Shift + LMC (layers) | Use this combination to select a range of layers at the same time |
| Ctrl + LMC (layers) | Use this combination to select multiple layers at the same time |