Misc typo correction, extra space removal in en IRMA explanation

pages/en/irma-explanation.md

@@ -80,23 +80,20 @@ involved. These non-identifying attributes apply to multiple people.
 Attributes form a natural mechanism for revealing certain aspects of
 yourself, while at the same time selectively disclosing other aspects.
 There are many scenarios where attributes provide precisely the
-relevant information that is required for a certain transaction.
+relevant information that is required for a certain transaction:
 
 * If you wish to join an online chat-box for minors, you have to prove
   that you are younger than 15, for instance. Or if you want to
   participate in an online discussion group of people with a certain
   sensitive disease, this disease itself can be the attribute that
   gives you anonymous access to the group.
-
 * When you wish to buy a violent game/movie/book online, you have to
-  prove that you are older than 16, or may even older than 18.
-
+  prove that you are older than 16, or maybe even older than 18.
 * If you possess the "student" attribute you may be able to get a
-  discount at a hairdresser; en if you have the "handicapped"
+  discount at a hairdresser; if you have the "handicapped"
   attribute of specific kind, you may be entitled to special
   transportation.
-
-* For a purchase online you home address attribute is needed for
+* For a purchase online your home address attribute is needed for
   delivery. Discounts may be available via a loyalty attribute of the
   webshop. And possible an age limit attribute is required if the item
   that you purchase is not intended for minors.
@@ -195,7 +192,7 @@ as:
   insurance account numbers, type of insurance, etc.
 * internet service providers and telecom operators, for: email
   addresses, phone numbers, IP-addresses
-* the Facebook's / Google's / Apple's / Amazon's / Microsoft's of this
+* the Facebooks / Googles / Apples / Amazons / Microsofts of this
   world for login data
 * big or small web-shops, with loyalty cards and custom numbers, with
   associated status, coupons, etc.
@@ -204,7 +201,7 @@ as:
 * hospitals and other healthcare organizations, for regulating access
   via attributes, not only for healthcare professionals, but also for
   patients
-* block chain initiatives, for authentication of users and their roles
+* blockchain initiatives, for authentication of users and their roles
 * military organizations, for all their different ranks and (security)
   compartmentalizations and clearances, and for members of special
   forces whose identifying data are typically not revealed
@@ -267,11 +264,11 @@ The three pictures below give a schematic overview, first of
 downloading attributes at an issuer, and subsequently, of
 using attributes at two different web-shops.
 <hr>
-<p align="center"><img src="../images/Transactions_IRMA_voorbereiding_en.png" alt="IRMA uitgever" style="width: 55%; height: 55%"/></p>
+<p align="center"><img src="../images/Transactions_IRMA_voorbereiding_en.png" alt="IRMA preparation" style="width: 55%; height: 55%"/></p>
 <hr>
-<p align="center"><img src="../images/Transactions_IRMA_eerste_gebruik_en.png" alt="IRMA gebruik" style="width: 50%; height: 50%"/></p>
+<p align="center"><img src="../images/Transactions_IRMA_eerste_gebruik_en.png" alt="IRMA first use" style="width: 50%; height: 50%"/></p>
 <hr>
-<p align="center"><img src="../images/Transactions_IRMA_enzovoort_en.png" alt="IRMA gebruik" style="width: 50%; height: 50%"/></p>
+<p align="center"><img src="../images/Transactions_IRMA_enzovoort_en.png" alt="IRMA and so on" style="width: 50%; height: 50%"/></p>
 <hr>
 
 This downloading of attributes is a natural form of modern *identity
@@ -358,7 +355,7 @@ architecture.
 
 The difference between a decentralized (IRMA) and centralized
 (non-IRMA) set-up is sketched below.
-<p align="center"><img src="../images/Transactions_all_lowres_en.png" alt="overzicht" style="width: 100%; height: 100%"/></p>
+<p align="center"><img src="../images/Transactions_all_lowres_en.png" alt="summary" style="width: 100%; height: 100%"/></p>
 
 It may be clear that in the non-IRMA set-up the issuer of attributes
 is a *privacy hotspot* who facilitates and sees all
@@ -443,7 +440,7 @@ were developed.
 
 As mentioned, individual IRMA attributes are combined in a credential.
 For instance, you can have a credential containing the following
-attributes.
+attributes:
 
 * nationality
 * place of birth
@@ -453,7 +450,7 @@ Such a credential may for instance be issued by the (local or
 national) authorities. You, as user, can decide, per transaction, to
 disclose any subset of these attributes. In the above example, you can
 for instance disclose your nationality, without revealing where or
-when you were born. This is *selective disclosure* property is the
+when you were born. This *selective disclosure* property is the
 basis of IRMA's privacy by design.
 
 The party that offers such credentials according to the IRMA protocols
@@ -531,7 +528,6 @@ The following terminology is used for IRMA's privacy guarantees.
     there data together. Of course, this does not work for identifying
     attributes, like your bank account number, but it does work for
     non-identifying attributes, like your gender.
-
 * **Multi-show unlinkability.** This means that multiple disclosures
     of the same attribute by the same user cannot be linked by a
     verifier. Concretely, if, on a single day, you prove to a webshop
@@ -694,8 +690,8 @@ for instance in your webshop or within your organization, do
 [contact](/contact-en) the Privacy by Design foundation.
 For instance, the foundation can:
 
-* advice about the organization of attributes for the intended application;
-* advice about the usage of the open source software of the foundation;
+* advise about the organization of attributes for the intended application;
+* advise about the usage of the open source software of the foundation;
 * possibly extend this software for optimal use within your
   application; such extensions will in principle also be open source
   and be available for others.