eliminate nuance to blocked entities

[Giovannino60]

how to put a group of lines that are visible but not erasable. I tried to put these lines in a layer and click on the padlock but the lines do not delete but discolor?
How do you leave them with the same color?

Thank you.

 

[MassiVonWeizen]

but does the guide ever use it? at this point erase it and earn space on the hard drive...
writing layer bloccato on the online guide commute the affected page
information about blocking objects of a layer it is possible to prevent the selection and modification of the objects of certain layers by blocking them.

blocking a layer, the objects contained in it will not be modified until the next release of the layer. the block reduces the possibility of accidentally modifying the objects present on a layer.
the objects of the blocked layers are numb; Moreover, when placing the cursor on an object of a blocked layer, a small block icon is displayed. you can set a shade level for blocked layers. this allows:
easily see what objects are on the blocked layers.
simplify the visual appearance of a design and yet maintain the object snap features and visual reference to such objects.
some operations, however, are equally possible even when a layer is blocked. is, for example, equally possible
set as current a blocked layer
add objects to a blocked layer
use the query commands such as list
use object snaps to snap objects on blocked layers
note
for objects found on the blocked layers the grips are not displayed.
the system variable laylockfadectl check the shade applied to the blocked layers.
when blocking a layer containing transparent objects, the visibility of these objects is further reduced by the specified shade value for the blocked layer.
Foamed layers are printed normally.