| Args | Gets an array of Exprs representing the arguments of this Expr. |
| Dimensions | Gets an array of integers representing the dimensions of this Expr. Works like the Wolfram Language function Dimensions. |
| Head | Gets the Expr representing the head of this Expr. Works like the Wolfram Language function Head. |
| Item | Gets a part based on its position index. This is the indexer for the class. |
| Length | Gets the length of this Expr. Works like the Wolfram Language Length function. |