Update Section-6_Tips_and_guidance.md

Author: sheenabassett

docs/Portal_User_Guide/Section-6_Tips_and_guidance.md

@@ -20,7 +20,7 @@ The other major consideration is the supplied metadata which may vary from publi
 
 3. Be aware that not all the resources (approx. 8%) have geographical co-ordinates supplied in their metadata and, where the location of the resource is considered sensitive, a bounding box will be shown containing a random ‘pin’ to indicate the approximate area. If there is a nearby resource, one pin will be shown – this can be clicked on to show the corresponding record. Where there are more than one resources nearby, these are shown in series, i.e. one at a time with each successive resource in the same location. This also means that in most cases, when the map filter is applied, the number of resources found will automatically reduce as all those missing location co-ordinates will be excluded from the results. 
 
-4. The Catalogue does not provide searching by (modern-day) country at present as this is fairly meaningless in the context of archaeology (even more so for marine archaeology!). Recorded place names are included in the metadata. More usefully, the Map allows the selection of areas of interest, including defining an area by drawing a polygon thus enabling borders to be ignored or otherwise. However, it can be useful to define a country, particularly islands or where national boundaries have remained fairly unchanged. One way to do this is through the Publisher filter as many of these providers are the national repository for their archaeological outputs. In many cases, Publishers have provided a Collection record which summarises provided datasets. Alternatively, the When filter can also include regions (within the PeriodO definitions) which may be used for defining areas of interest. A new filter which allows a geographical region to be defined is under development.
+4. Although it is possible to search the Catalogue using the (modern-day) Country filter, this can be fairly meaningless in the context of archaeology (even more so for marine archaeology!). Recorded place names are included in the metadata. More usefully, the Map allows the selection of areas of interest, including defining an area by drawing a polygon thus enabling borders to be ignored or otherwise. However, it can be useful to define a country, particularly islands or where national boundaries have remained fairly unchanged. One way to do this is through the Publisher filter as many of these providers are the national repository for their archaeological outputs. In many cases, Publishers have provided a Collection record which summarises provided datasets. Alternatively, the When filter can also include regions (within the PeriodO definitions) which may be used for defining areas of interest. 
 
 ## Working with time periods
 Two approaches have been used to denote time periods – absolute start and end dates and period names. There are some obvious issues with both methods: