with studio, I open 1 for each namespace and then drag and drop it from 1 NS to the other
works single or multiple
not so useful for 300.  ns %ALL looks more promising

Not that impressive. My skin is just pale and hairy.  Model OLD WHITE MAN

 other SQL tools. 

confirmed: 
I used ODBC + SQLGateway for access and operation from local IRIS
works perfectly.

read docu

• classmethod CompileList(ByRef list As %String = "", qspec As %String = "", ByRef errorlog As %String, ByRef updatedlist As %String) as %Status

Compile a list of items specified in 'list' and separated by commas, or an array list("item.MAC")="". You can also use ? or * wild cards and if you wish to exclude items pass ' before the item name which also supports wild card, e.g. "User.*.cls,'User.T*.cls". Each item on the list is sufixed by the type of item it is so to compile a class and a routine you could specify 'class.cls,routine.mac' The order of compilation is INT, CLS, MAC, CSR, CSP.
qspec is a list of flags or qualifiers which can be displayed with 'Do $system.OBJ.ShowQualifiers()' and 'Do $system.OBJ.ShowFlags()'. Note that while /mapped=0 qualifier applies to the pattern passed in by only searching the default routine database, however any compile is done in the current namespace. So it is possible a routine/class found with /mapped=0 may not be visible in the current namespace or may be a different version if there are complicated package mappings.

ACCOUNT SOLVED: with a new account name. may be a typo in the e-mail
THOUGH OPEN:   where is the admin contact

I tried to create an account on https://portal.sql-contest.isccloud.io/account/login

Just the welcome mail never arrived.
the page proposed to contact admin in this case   

Note: If you do not receive an email, it might be that the username or email address entered is not registered for an account. If you are unable to remember the username or email address you used to sign up for an account, please contact your system administrator for assistance.

No further notice. Who is that system admin? Which mail ?
Not so impressive
 

from docs:

If you are using a UNIX® or Linux system, you can provide a list of alias definitions which the Terminal will set automatically at the start of every session. Define these aliases (one per line) in a file named .iris_init in the home directory.

never tried this. I rarely work on *X

Creating Aliases for Commonly Used Commands

Do ##class(Security.Users).UnExpireUserPasswords("*")
or
set Prop("Password")=NewPassword
set tSC=##class(Security.Users).Modify(Username,.Prop)

Classref1
 Classref2

USER>:?
 :<number>    Recall command # <number>
 :?           Display help
 :py          Do $system.Python.Shell()
 :mdx         Do $system.DeepSee.Shell()
 :sql         Do $system.SQL.Shell()
 :tsql        Do $system.SQL.TSQLShell()
 :alias       Create/display aliases
 :clear       Clear history buffer
 :history     Display command history
 :unalias     Remove aliases

HTH

???  looks like Move to End only works once after Open   not sure after Rewind

instead of %File, I'd suggest to use %Stream.FileCharacter
it has a method MoveToEnd()  that's what might solve your append issue
more

OOPS !  #11 Query as %Query or Query based on ObjectScript

if Sifra is the IDKEY of Material what is the difference
between Material (which is the ID already) and Material->Sifra  ???