I forgot to mention - this is for searching the logbook.   So would the config file look more like this:

[global]

port = 8080

usr = vulcanstaff

Max content length = 1073741824

Menu commands = New, Edit, Delete, Reply, Find, Last day, Move to, Copy to, Import, Help

RSS Title = $subject, posted by $author on $entry time

RSS Entries = 10

Options Category = Date, Subject, Subtext

Quick filter = Date, Subject, Subtext

Use Lock = 1

Reverse sort = 1

Required Attributes = Author, Subject

I know that this is for searching. But you don't get the point. You have attributes, like Date, Category, Subject. Each attribute can either contain arbitrary text (like the subject), or one of a set of predefined values. So category can be, let's day, "one", "two", "three". You define the possible options of the category with

Options Category = one, two, three

If you then define the quick filter

Quick filter = Category

then you get for the category a drop-down box where you can select "one", "two" or "three". If you do so, elog shows all logbook entries where the category attribute has the selected value.

I hope that this is clearer now. 

Thanks Stefan, I think I understand, and now I see the options definition on the syntax page.  I apologize for taking up your time and thank you for the great software.  I think this is right now:

Options Search = Date, Subject, Subtext

Quick filter = Search

The function of "Drop attachments here..." is only for root user? I'd like it could be used by all users.

I can't confirm this behavoiur. In our instance, every user can use the attachment function of the elog.
Either through "Drag&Drop" or "Browse&Upload" in the entry editor.

What do you mean by "root" user?
The elog can have serveral admin users, but this behaviour is equal for admin and non-admin users.
You should not run the elog server as user "root" of the machine for security reason, but also for issues with file permissions.

I just used my own account to test the "Drag&Drop" function in this forum ,  and it failed.  In our case, we need to upload ten more images into logbook at once, it's more effective to use "Drag&Drop" than "Browse&Upload" feature for "Browse&Upload" only can choose one attachment at once, but "Drag&Drop" can choose several attachments at once. The admin user can use this feature, but non-admin user not in our site. I did run the elog server as  user "root". I'm not sure it is related to the problem.

In my testings I didn't found this behaviour, but my collegues also reported this issue.
So I searched for the difference between my test setup and the production logbooks.

I believe the "restrict edit = 1" config option may be responsible for this behaviour.
I had the browser console running in the background and "Drag&Drop" send an XHR request,
which failed with the message: "Only user can edit this entry".
This message is tied to the "restrict edit" option as far as I know.
So I tried removing the option and upload via "Drag&Drop" started to work as intended.
This behaviour only occurs for non-admin users, as admin users are not affected by

Can you verify this?
I can verify to get the same error message in this elog forum in the browser console.