from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun cartography The line near the edge of a printed map which separates it from the margin.
Sorry, no etymologies found.
To fix this, we have to modify the neatline for each GeoPDF which will force the map canvas to cover only the image extent so that Map Assembler can stitch it together properly.
Please see the before and after snap shots of the edited neatline.
previous post that an option to rid your imagery of the pesky collar data is to adjust the neatline to exclude it from the map frame all together.