The OpenEdge Hive

We have some programs that use aliases that consists of 1 character (don't know why but they exsist).
for example in the code they use s..

I can find in the Prolint documentation that we can use the file /settings/dbaliases.d to prevent compile errors warnings for those in Prolint.
I've create that file and inserted the following lines
"s" "mydatabase"
"m" "mydatabase"

But when I run the program that uses these aliases in Prolint I still get
compile failed
Unknown database name s. (855)

Is there anyone that uses this dbaliases.d file?
What I'm I doing wrong?
Is t because the alias is only 1 character?