注意遇到有相同缩写的属性时，应该写全称避免冲突
| data | d |
| format | f |
| value | v |
| ref | r |
| var | 因为主要用于预定义，所以一般不缩写 |
| round | r |
| sale | s |
| property | p |
| split | s |
|
distinct |
ds |
| evl | e |
| nvl | n |
| test | t |
|
remove |
r |
|
scope |
sp |
|
else |
e |
|
begin |
b |
| end | e |
| selector |
st |
| index | i |
| qty |
q |
| textKey | tk |
| valueKey | vk |
| items | is |
