User Story

1. the simplified "@" should imply @load, @save, @bind, and @command

2. @command and @ should be the same usage for positional and named parameter

3. the command parameter should not be confusing, @bindparam and positional should not be used together (just throw exception)
And for the following case, it should work (@BindParam no need to specify)

<button onClick="@('log', msg='logMessage')" label="@command"/>

@Command
public void log(String msg) {
    System.out.println(msg);
}

Acceptance Criteria

1. @(vm.xxx) -> @load(vm.xxx)
2. Able to use positional parameter in @command
3. Adjust positional and non-positional behavior (as above description)

Details

1.
MVVM simplified property binding syntax "@" should refer to "@bind"

@init(vm.xxx) in MVVM is like el expression (${vm.xxx})

it is not the idea of two-way binding.

So the syntax sugar is not useful.

2.
for the symmetry