You can save a document using its current name and location, or save a copy of a document using a different name and location.
When naming files, avoid using spaces and special characters in file and folder names. In particular, do not use special characters (such as é, ç, or ¥) or punctuation (such as colons, slashes, or periods) in the names of files you intend to put on a remote server; many servers change these characters during upload, which will cause any links to the files to break. Also, do not begin a filename with a numeral.
To overwrite the current version on the disk, and save any changes you have made, select File > Save.
To save the file in a different folder or using a different name, select File > Save As.