The editor allows you to place more than one command on a line. Each command on the line is executed sequentially from left to right. For example:
ob+ot+
will turn on option blank followed by option tab. The command:
1,4d$d
will delete lines one through four and then delete the last line. Note that the line range only applies to the command that it immediately precedes. Should an error occur on any command then execution will be halted and any following commands will not be executed.
Some editor commands consume all characters until the end of the line collecting their right argument. They must therefore be the last command on any line on which they occur. For example
e filename
consumes all characters until the end of the line collecting the filename.