If you can grab a Caché distribution you will find in 
%cachedir%\dev\cpp\    several samples and required sources

did you check $zf(-3,...    $zf(-4,...., ........

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls?KEY=BGCL_dynamic
and
https://cedocs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=RCOS_fzf-4
also
https://cedocs.intersystems.com/latest/csp/docbook/Doc.View.cls?KEY=BGCL_library

the generated file:
------------------------------------------------------------------------------------------
<br><p>
<nobr>Klasse <b>zrcc.EX.ISOS</b>
</nobr><p>Execute InterSystems ObjectScript over ODBC</p><a name="Anchor_Inventory"></a>
<table class="Label" cellpadding="0" cellspacing="0" cols="1">
<tr valign="center">
<td align="left" width="100%" >
<a href="#" onclick="expandIt(1); return false;" class="PackageChoice" title="Expand/Collapse Inventory" onmouseover="this.style.color = 'red';" onmouseout="this.style.color = 'black';">
    <image id=Im1 src=/csp/sys/images/ExpandedMarker.jpg height=15 width=16 border=0 align=bottom>
<nobr><b>Inventory</b></nobr></a>
</td>
</tr>
</table>
<br>
<div id="Id1" class="DivShow" style="">
<table class="Summary" cellpadding="0" cellspacing="0" cols="1">
<tr valign="center">
<th align="center">
Parameters
</th>
<th align="center">
Properties
</th>
<th align="center">
<a href="#Anchor_Methods">Methods</a>
</th>
<th align="center">
Queries
</th>
<th align="center">
Indices
</th>
<th align="center">
ForeignKeys
</th>
<th align="center">
Triggers
</th>
</tr>
<tr>
<td align="center" class="private">
</td>
<td align="center" class="private">
</td>
<td align="center">
<a href="#Anchor_Methods">3</a>
</td>
<td align="center" class="private">
</td>
<td align="center" class="private">
</td>
<td align="center" class="private">
</td>
<td align="center" class="private">
</td>
</tr>
</table>
<br/>
<br/></div>
<a name="Anchor_Summary"></a>
<table class="Label" cellpadding="0" cellspacing="0" cols="1">
<tr valign="center">
<td align="left" width="100%" >
<a href="#" onclick="expandIt(2); return false;" class="PackageChoice" title="Expand/Collapse Summary" onmouseover="this.style.color = 'red';" onmouseout="this.style.color = 'black';">
    <image id=Im2 src=/csp/sys/images/ExpandedMarker.jpg height=15 width=16 border=0 align=bottom>
<nobr><b>Summary</b></nobr></a>
</td>
</tr>
</table>
<br>
<div id="Id2" class="DivShow" style="">
<table class="Summary" border="0" cellspacing="0" cellpadding="1">
        <tr><th colspan="3" title="Bold for local member; italics for inherited; shaded for private; blue for client methods; strikethrough for deprecated.">Methoden</th></tr>
<tr>
<td  nowrap><a class="" href="#METHOD_Gset" title="zrcc.EX.ISOS">Gset</a></td>
<td  nowrap><a class="" href="#METHOD_Ping" title="zrcc.EX.ISOS">Ping</a></td>
<td  nowrap><a class="" href="#METHOD_Xcmd" title="zrcc.EX.ISOS">Xcmd</a></td>
</tr>
</table><br/>
<br/></div>
<a name="Anchor_Methods"></a>
<table class="Label" cellpadding="0" cellspacing="0" cols="1">
<tr valign="center">
<td align="left" width="100%" >
<a href="#" onclick="expandIt(3); return false;" class="PackageChoice" title="Expand/Collapse Methods" onmouseover="this.style.color = 'red';" onmouseout="this.style.color = 'black';">
    <image id=Im3 src=/csp/sys/images/ExpandedMarker.jpg height=15 width=16 border=0 align=bottom>
<nobr><b>Methods</b></nobr></a>
</td>
</tr>
</table>
<br>
<div id="Id3" class="DivShow" style="">
<a name="Gset"></a>
<a name="METHOD_Gset"></a>
<span class="external"><nobr>&#149 classMethode <b>Gset(glob As <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a></nobr>, subs As <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a></nobr>, val As <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a></nobr> = "", dd As <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25Integer">%Integer</a></nobr> = 1)</b>
as <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a></nobr></nobr>
[ SQLProc = Gset ]</span><blockquote>
set / kill global over ODBC
subs = subscript in ( )
dd = $data of source during global copy</blockquote>
<a name="Ping"></a>
<a name="METHOD_Ping"></a>
<span class="external"><nobr>&#149 classMethode <b>Ping()</b>
as <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a></nobr></nobr>
[ SQLProc = Ping ]</span><blockquote>
check connectivity</blockquote>
<a name="Xcmd"></a>
<a name="METHOD_Xcmd"></a>
<span class="external"><nobr>&#149 classMethode <b>Xcmd(cmd As <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a></nobr>, ret As <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a></nobr> = "")</b>
as <nobr><a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a></nobr></nobr>
[ SQLProc = Xcmd ]</span><blockquote>
eXecute Command over ODBC
name of local variable for return value</blockquote>
-------------------------------------------------------------------------------------------
​​​

Hi @Yuri Marx!
I did a quick and dirty try during lunch in terminal:   

set %library=$namespace
set set %request=##class(%CSP.Request).%New()
set cdef=##class(%ClassDefinition).%OpenId("zrcc.EX.ISOS")     ; my classname
set file="my.html" o file:("WNS"):0 write $t     ;  1 if OK
use file d ##class(%CSP.Documatic).RenderClassPage(cdef,1)
close file

The result still holds references to /csp/...images  and data types  
     <image id=Im1 src=/csp/sys/images/ExpandedMarker.jpg height=. . . 
    <a href="%25CSP.Documatic.cls?PAGE=CLASS&LIBRARY=USER&CLASSNAME=%25String">%String</a>
that you might want to resolve as they are quite generic or you just ignore it .
My browser is very friendly  :-)

And that's the result:


Some polishing might be required
 

For i=2:1:$LENGTH(line) { 
    set $PROPERTY(SourceTable, "Field"_i) = $PIECE(line, "|", i)using $PROPERTY()
   }

Use $PROPERTY()

@Anna Golitsyna 
If you have access over ODBC this article may help you.
 https://community.intersystems.com/post/objectscript-over-odbc
 

There is no direct way.
BUT:
If SSH is installed on your server you may connect to a CMD session (e.g by using PuTTY) over SSH
[ Windows DOS prompt ]
From there you can run %cachedir%\bin\Csession.exe by local access without using Telnet.

PuTTY works for me without problems for 10 years now (at least)  

Hello @Anna Golitsyna!
the 3rd example is 1 class that contains 2 basic functionalities:  A Server and a Client.
The system you want to control runs the ClassMethod Server.
- opens an IP port and listens for orders, execute it, and continue looping.
- it is typically started in the background during  system start (from %ZSTART.mac)
This is the "hidden Login"

The (Classmethod) Client connects to the listening port and sends a request and gets answers.
The structure of Requests and Answer is up to you and makes sure you have always control
over what should happen on the remote system. As your  "Listener" is active already there
is no need for any further login. But you are of course free to implement it on top of this basic mechanic.

The basic logic is hierarchically organized as an extended B+ tree. wiki