Rendered pictures of the H-bonded chains in TH1.
Starting with the lattice chain built using ORTEX as described in the TH1 example

 

Exit ORTEX and in Oscail click on Use LIST and Use LIST.INS

The choices here Use LIST.INS and Use LISTU.INS differ in that the former writes SYMMOPS to the INS file while the latter writes anisotropic thermal parameters if they are available. After this operation the jobname is switched to TEST. It is a good idea to use the and buttons in sequence to switch the jobname to ptest and select Edit.INS  put the command (4 spaces)PMACT  3  4  2.5  3.5 into the INS file as shown.
Cl2 and O5 are atoms 3 and 4 in the INS file.

TITL th1 
CELL 0.71069 13.4100 9.4800 19.0000 90.00 98.45 90.00
LATT -1
    PMACT 3 4 2.5 3.5
    PMALT
FVAR 1.0
Ni1   1   0.77142 0.45405 0.66398 11.0 0.05 55501.
Sn1   1   0.79471 0.22771 0.53228 11.0 0.05 55501.
Cl2   1   0.94986 0.06898 0.68885 11.0 0.05 55501.
O5    1   0.91771 0.39012 0.70022 11.0 0.05 55501.

Save the INS close the editor and run ORTEX to get the view you want

There is no need to put in H-bonds here. Use the render button and set the Covalent Tol. to 0.3 and uncheck Use SYMM and OK

If Use SYMM is left checked then dashed bonds are drawn between asymmetric units only

Back