afni.nimh.nih.gov

Will a comment in the middle of a single command(spread over multiple lines with "\") allow the command to properly execute?
The following bash script implies that it won't:

#!/bin/bash
echo \
"123" \
"456"
echo \
"abc" \
#test \
"def"

output:

123 456
abc
./testscript.sh: line 8: def: command not found