If it's slippery then it's concidered EW, if it's watery then put water. I'm not the expert on cm, but if it's stretchy then I believe it is EW. Please correct me if I'm wrong.
Ummmmm what colors is your cm? I'm hoping not neon blue!

J/K. If it's spotting then you can mark E or W and spotting.
Editting to say that up in the Getting started sticky it has info for charting your cm. Here's what I'm copy and pasteing for you ladies.
watery to ewcm (eggwhite cervical mucuos) this is your most fertile cervical fluid and is the most condusive to sperm, it should be strechy and clear/mildy white
I hope that helps, but there's lots more to read if you want. Good luck!