Create List File

I am trying to create a ‘list file’ with few steps of animated figure in different stages. Synfig wiki tutorial is telling for morphing, import a list file with different stages. but it doesnt say how to make a list file. when i did in word document, Synfic wouldn’t take it. It won’t take text doc from windows too. Can someone please help me with this.
Thanks

Don’t use word, use something like notepad and create a simple text document with the .lst extension.
Link to Wiki here for further reading.