Complete example to replace a text using MDL

Please provide few complete examples to 
i> find/replace text using MDL
ii> Place and move a block using MDL


Please provide some complete examples , that will help me to learn MDL (Mirostation Development Language).


[I am toataly new in this field and need to deliver few applications using MDL quickly . Otherwise I'll be in big trouble. Please anybody help me ASAP. Thanks in advance.]