This July I have written a SCN document which has met the image number limit (20). Now I would like to append more content to it however due to the limit I could not add more images into the document. May I also know if the same limit still hold true for SCN blog? Do you have any suggestion how could I proceed?
Yes, there is a limit of ~20 images and a total of 1 MB. Be more selective about what images are needed (do you need all of them?) or create a second part of your document or blog post to get around the limit.
As long as you link between the different parts, use the same title and use the same tags it will be easy to use and navigate.